i agree, there is no reason to play a map more then once per season...
as far as myself, i never repeat a map EVER... i believe in every map being random, i dont even have roper maps saved.. i even randomize shopper maps.
its obvious that repeating maps gives one person an advantage, there is no way anyone can say otherwise...
as people said, there is no way to enforce the rule through TUS coding, or anything.. because as mentioned, just changing a pixel will trick the system...
but we can make it a rule, and if you opponent catches it, and wants to make a complain, the game could be voided.. but if both agreed on playing the certain map then that would obviously be ok...
but sure, a rule should be made.. and enforced... imo